Акку-Чек Перформа Нано - Manual (Page 53)

Chapter 4: Control Testing
Why Perform Control Tests
Performing a control test lets you know that the meter and test strips are working
properly to give reliable results. You should perform a control test when:
You open a new box of test strips •
You left the test strip container open •
You want to check the meter and test strips •
Your test strips were stored in extreme temperature and/or humidity •
You dropped the meter •
Your test result does not agree with how you feel •
You want to check if you are testing correctly •
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